Class: YARD::CodeObjects::Base Abstract
- Inherits:
-
Object
- Object
- YARD::CodeObjects::Base
- Defined in:
- lib/yard/code_objects/base.rb
Overview
Base
is the superclass of all code objects recognized by YARD. A code object is any entity in the Ruby language (class, method, module). A DSL might subclass Base
to create a new custom object representing a new entity type.
Registry Integration
Any created object associated with a namespace is immediately registered with the registry. This allows the Registry to act as an identity map to ensure that no object is represented by more than one Ruby object in memory. A unique #path is essential for this identity map to work correctly.
Custom Attributes
Code objects allow arbitrary custom attributes to be set using the #[]= assignment method.
Namespaces
There is a special type of object called a “namespace”. These are subclasses of the NamespaceObject and represent Ruby entities that can have objects defined within them. Classically these are modules and classes, though a DSL might create a custom NamespaceObject to describe a specific set of objects.
Direct Known Subclasses
ClassVariableObject, ConstantObject, MacroObject, MethodObject, NamespaceObject
Instance Attribute Summary collapse
-
#docstring ⇒ Docstring
The documentation string associated with the object.
-
#dynamic ⇒ Boolean
Marks whether or not the method is conditionally defined at runtime.
-
#files ⇒ Array<String>
readonly
The files the object was defined in.
-
#group ⇒ String
The group this object is associated with.
-
#namespace ⇒ NamespaceObject
(also: #parent)
The namespace the object is defined in.
-
#signature ⇒ String
The one line signature representing an object.
-
#source ⇒ String?
The source code associated with the object.
-
#source_type ⇒ Symbol
Language of the source code associated with the object.
-
#visibility ⇒ Symbol
The visibility of an object (:public, :private, :protected).
Class Method Summary collapse
-
.===(other) ⇒ Boolean
Compares the class with subclasses.
-
.new(namespace, name, *args) {|obj| ... } ⇒ Base
Allocates a new code object.
Instance Method Summary collapse
-
#[](key) ⇒ Object?
Accesses a custom attribute on the object.
-
#[]=(key, value) ⇒ void
Sets a custom attribute on the object.
-
#add_file(file, line = nil, has_comments = false) ⇒ Object
Associates a file with a code object, optionally adding the line where it was defined.
-
#copy_to(other) ⇒ Base
Copies all data in this object to another code object, except for uniquely identifying information (path, namespace, name, scope).
-
#copyable_attributes ⇒ Array<String>
protected
Override this method if your code object subclass does not allow copying of certain attributes.
-
#dynamic? ⇒ Boolean
Is the object defined conditionally at runtime?.
-
#equal?(other) ⇒ Boolean
(also: #==, #eql?)
Tests if another object is equal to this, including a proxy.
-
#file ⇒ String
Returns the filename the object was first parsed at, taking definitions with docstrings first.
-
#format(options = {}) ⇒ String
Renders the object using the templating system.
-
#has_tag?(name) ⇒ Boolean
Tests if the #docstring has a tag.
-
#hash ⇒ Integer
The object’s hash value (for equality checking).
-
#initialize(namespace, name, *args) {|self| ... } ⇒ Base
constructor
Creates a new code object.
-
#inspect ⇒ String
Inspects the object, returning the type and path.
-
#line ⇒ Fixnum?
Returns the line the object was first parsed at (or nil).
- #method_missing(meth, *args, &block) ⇒ Object
-
#name(prefix = false) ⇒ Symbol, String
The name of the object.
-
#path ⇒ String
(also: #to_s)
Represents the unique path of the object.
-
#relative_path(other) ⇒ String
The shortest relative path from this object to
other
. -
#root? ⇒ Boolean
Whether or not this object is a RootObject.
-
#sep ⇒ String
Override this method with a custom component separator.
-
#tag(name) ⇒ Object
Gets a tag from the #docstring.
-
#tags(name = nil) ⇒ Object
Gets a list of tags from the #docstring.
-
#to_ary ⇒ nil
This object does not turn into an array.
-
#type ⇒ Symbol
Default type is the lowercase class name without the “Object” suffix.
Constructor Details
#initialize(namespace, name, *args) {|self| ... } ⇒ Base
Creates a new code object
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# File 'lib/yard/code_objects/base.rb', line 209 def initialize(namespace, name, *args, &block) if namespace && namespace != :root && !namespace.is_a?(NamespaceObject) && !namespace.is_a?(Proxy) raise ArgumentError, "Invalid namespace object: #{namespace}" end @files = [] @current_file_has_comments = false @name = name.to_sym @source_type = :ruby @visibility = :public @tags = [] @docstring = Docstring.new('', self) @docstring_extra = nil @docstring_extra_tags = nil @namespace = nil self.namespace = namespace yield(self) if block_given? end |
Dynamic Method Handling
This class handles dynamic methods through the method_missing method
#dynamic_attr_name ⇒ Object #dynamic_attr_name=(value) ⇒ Object
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# File 'lib/yard/code_objects/base.rb', line 344 def method_missing(meth, *args, &block) if meth.to_s =~ /=$/ self[meth.to_s[0..-2]] = args.first elsif instance_variable_get("@#{meth}") self[meth] else super end end |
Instance Attribute Details
#docstring ⇒ Docstring
The documentation string associated with the object
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# File 'lib/yard/code_objects/base.rb', line 141 def docstring @docstring end |
#dynamic ⇒ Boolean
Marks whether or not the method is conditionally defined at runtime
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# File 'lib/yard/code_objects/base.rb', line 145 def dynamic @dynamic end |
#files ⇒ Array<String> (readonly)
The files the object was defined in. To add a file, use #add_file.
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# File 'lib/yard/code_objects/base.rb', line 115 def files @files end |
#group ⇒ String
Returns the group this object is associated with.
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# File 'lib/yard/code_objects/base.rb', line 149 def group @group end |
#namespace ⇒ NamespaceObject Also known as: parent
The namespace the object is defined in. If the object is in the top level namespace, this is Registry.root
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# File 'lib/yard/code_objects/base.rb', line 120 def namespace @namespace end |
#signature ⇒ String
The one line signature representing an object. For a method, this will be of the form “def meth(arguments…)”. This is usually the first source line.
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# File 'lib/yard/code_objects/base.rb', line 137 def signature @signature end |
#source ⇒ String?
The source code associated with the object
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# File 'lib/yard/code_objects/base.rb', line 124 def source @source end |
#source_type ⇒ Symbol
Language of the source code associated with the object. Defaults to :ruby
.
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# File 'lib/yard/code_objects/base.rb', line 130 def source_type @source_type end |
#visibility ⇒ Symbol
Returns the visibility of an object (:public, :private, :protected).
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# File 'lib/yard/code_objects/base.rb', line 156 def visibility @visibility end |
Class Method Details
.===(other) ⇒ Boolean
Compares the class with subclasses
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# File 'lib/yard/code_objects/base.rb', line 190 def ===(other) other.is_a?(self) end |
.new(namespace, name, *args) {|obj| ... } ⇒ Base
Allocates a new code object
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# File 'lib/yard/code_objects/base.rb', line 164 def new(namespace, name, *args, &block) raise ArgumentError, "invalid empty object name" if name.to_s.empty? if namespace.is_a?(ConstantObject) namespace = Proxy.new(namespace.namespace, namespace.value) end if name.to_s[0,2] == NSEP name = name.to_s[2..-1] namespace = Registry.root end if name =~ /(?:#{NSEPQ})([^:]+)$/ return new(Proxy.new(namespace, $`), $1, *args, &block) end obj = super(namespace, name, *args) existing_obj = Registry.at(obj.path) obj = existing_obj if existing_obj && existing_obj.class == self yield(obj) if block_given? obj end |
Instance Method Details
#[](key) ⇒ Object?
Accesses a custom attribute on the object
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# File 'lib/yard/code_objects/base.rb', line 314 def [](key) if respond_to?(key) send(key) elsif instance_variable_defined?("@#{key}") instance_variable_get("@#{key}") end end |
#[]=(key, value) ⇒ void
This method returns an undefined value.
Sets a custom attribute on the object
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# File 'lib/yard/code_objects/base.rb', line 327 def []=(key, value) if respond_to?("#{key}=") send("#{key}=", value) else instance_variable_set("@#{key}", value) end end |
#add_file(file, line = nil, has_comments = false) ⇒ Object
Associates a file with a code object, optionally adding the line where it was defined. By convention, ‘<stdin>’ should be used to associate code that comes form standard input.
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# File 'lib/yard/code_objects/base.rb', line 262 def add_file(file, line = nil, has_comments = false) raise(ArgumentError, "file cannot be nil or empty") if file.nil? || file == '' obj = [file.to_s, line] return if files.include?(obj) if has_comments && !@current_file_has_comments @current_file_has_comments = true @files.unshift(obj) else @files << obj # back of the line end end |
#copy_to(other) ⇒ Base
Copies all data in this object to another code object, except for uniquely identifying information (path, namespace, name, scope).
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# File 'lib/yard/code_objects/base.rb', line 235 def copy_to(other) copyable_attributes.each do |ivar| ivar = "@#{ivar}" other.instance_variable_set(ivar, instance_variable_get(ivar)) end other.docstring = docstring.to_raw other end |
#copyable_attributes ⇒ Array<String> (protected)
Override this method if your code object subclass does not allow copying of certain attributes.
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# File 'lib/yard/code_objects/base.rb', line 533 def copyable_attributes vars = instance_variables.map {|ivar| ivar.to_s[1..-1] } vars -= %w(docstring namespace name path) vars end |
#dynamic? ⇒ Boolean
Is the object defined conditionally at runtime?
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# File 'lib/yard/code_objects/base.rb', line 153 def dynamic?; @dynamic end |
#equal?(other) ⇒ Boolean Also known as: ==, eql?
Tests if another object is equal to this, including a proxy
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# File 'lib/yard/code_objects/base.rb', line 294 def equal?(other) if other.is_a?(Base) || other.is_a?(Proxy) path == other.path else super end end |
#file ⇒ String
Returns the filename the object was first parsed at, taking definitions with docstrings first.
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# File 'lib/yard/code_objects/base.rb', line 278 def file @files.first ? @files.first[0] : nil end |
#format(options = {}) ⇒ String
Renders the object using the templating system.
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# File 'lib/yard/code_objects/base.rb', line 465 def format( = {}) = .merge(:object => self) Templates::Engine.render() end |
#has_tag?(name) ⇒ Boolean
Tests if the #docstring has a tag
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# File 'lib/yard/code_objects/base.rb', line 510 def has_tag?(name); docstring.has_tag?(name) end |
#hash ⇒ Integer
Returns the object’s hash value (for equality checking).
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# File 'lib/yard/code_objects/base.rb', line 305 def hash; path.hash end |
#inspect ⇒ String
Inspects the object, returning the type and path
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# File 'lib/yard/code_objects/base.rb', line 472 def inspect "#<yardoc #{type} #{path}>" end |
#line ⇒ Fixnum?
Returns the line the object was first parsed at (or nil)
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# File 'lib/yard/code_objects/base.rb', line 286 def line @files.first ? @files.first[1] : nil end |
#name(prefix = false) ⇒ Symbol, String
The name of the object
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# File 'lib/yard/code_objects/base.rb', line 250 def name(prefix = false) prefix ? @name.to_s : @name end |
#path ⇒ String Also known as: to_s
Represents the unique path of the object. The default implementation joins the path of #namespace with #name via the value of #sep. Custom code objects should ensure that the path is unique to the code object by either overriding #sep or this method.
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# File 'lib/yard/code_objects/base.rb', line 420 def path @path ||= if parent && !parent.root? [parent.path, name.to_s].join(sep) else name.to_s end end |
#relative_path(other) ⇒ String
Returns the shortest relative path from this object to other
.
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# File 'lib/yard/code_objects/base.rb', line 432 def relative_path(other) other = Registry.at(other) if String === other && Registry.at(other) same_parent = false if other.respond_to?(:path) same_parent = other.parent == parent other = other.path end return other unless namespace common = [path, other].join(" ").match(/^(\S*)\S*(?: \1\S*)*$/)[1] common = path unless common =~ /(\.|::|#)$/ common = common.sub(/(\.|::|#)[^:#\.]*?$/, '') if same_parent if %w(. :).include?(common[-1,1]) || other[common.size,1] == '#' suffix = '' else suffix = '(::|\.)' end result = other.sub(/^#{Regexp.quote common}#{suffix}/, '') result.empty? ? other : result end |
#root? ⇒ Boolean
Returns whether or not this object is a RootObject.
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# File 'lib/yard/code_objects/base.rb', line 513 def root?; false end |
#sep ⇒ String
Override this method with a custom component separator. For instance, MethodObject implements sep as ‘#’ or ‘.’ (depending on if the method is instance or class respectively). #path depends on this value to generate the full path in the form: namespace.path + sep + name
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# File 'lib/yard/code_objects/base.rb', line 522 def sep; NSEP end |
#tag(name) ⇒ Object
Gets a tag from the #docstring
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# File 'lib/yard/code_objects/base.rb', line 502 def tag(name); docstring.tag(name) end |
#tags(name = nil) ⇒ Object
Gets a list of tags from the #docstring
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# File 'lib/yard/code_objects/base.rb', line 506 def (name = nil); docstring.(name) end |
#to_ary ⇒ nil
Returns this object does not turn into an array.
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# File 'lib/yard/code_objects/base.rb', line 308 def to_ary; nil end |
#type ⇒ Symbol
Default type is the lowercase class name without the “Object” suffix. Override this method to provide a custom object type
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# File 'lib/yard/code_objects/base.rb', line 407 def type self.class.name.split(/#{NSEPQ}/).last.gsub(/Object$/, '').downcase.to_sym end |